Electric switch.



M. GUETT.

ELECTRIC SWITCH. APPLICATION FILED JUNE 20, 1912 1,058,051. Patented Apr. 8,1913,

WITNESSES v m 9 4 I INVENTOR H v M mma, Guefi: d BY v v- ATTORNEY UNITED STATES PATENT OFFICE.

MONROE GUETT, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE HART & H EGEMAN MANUFACTURING COMPANY, OF HARTFORD, CONNECTICUT, A' CORPORATION OF CONNECTICUT.

ELECTRIC SWITCH.

Specification of Letters lat ent.

Application filed June 20, 1912. Serial No. 704,838.

To all whom it may concern:

Be it known that I, MONROE. GUE 'r, a citizen of the United States, and a resident of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Electric Switches, of which the following is a specification.

The object'of this invention is to produce a switch of the push button type provided with an operative mechanism having features of novelty and advantage, andone which permits of making a small and compact switch. l

In the drawingsFi'gure 1 is a side elevation of a switch embodying my invention, the casing being shown in section. Fig. 2 is a sectional plan view on the line 2, 2 of Fig. 1.

Referring to the drawings a denotes a base of insulating material upon which the switch mechanism is mounted, rabbeted to receive the edges of a cover I) the top of which is apertured to receive the push buttons cc.

Centrally upon the base there is secured a standard 10 upon which is centrally pivoted a rock arm 11 to which the push buttons 06 are connected at the opposite sides of the pivot.- At one end of this lever is a switch arm 12 which is insulated therefrom, and which in one position is adapted to close the circuit between the stationary contacts 13, 13 mounted on the base. On adjacent opposed faces of the standard and rock arm are opposing and cooperating projections 15, 16 each of which is provided with oppositely disposed inclined side faces 17 18, 19, 20. Projecting from corresponding sides of the standard and rock arm are fingers 22, 23 between the ends of which there is stretched a spring 24.. The finger on the rock arm is at the opposite side of the pivot from the finger on the standard, with the result that the spring tends. to cramp the rock arm slightly on its'pivot and hold the two projections in engagement.

The operation of the device is as follows: Pressure on one of the push buttons causes the rock arm to move on its pivot until the high point of its projection 16 passes the high point of the projection 15 on the standard. During this movement the spring holding these parts in engagement tends to retard this motion. As soon as the high points of the projections 15, 16 have passed the engaging parts on the stationary and movable members in frictional engagement with one another, and then when that fric tional engagement has become overcome and the high points of the engagingprojections caused to pass one another, the spring acts to throw the poles to the opposite extreme position, causing the inclined face of the projection on the rock arm to move down arm pivoted on the standard, a switch plate carried by the rock arm and adapted in one,

position to close the circuit between the sta tionary contacts, push buttons connected" with said rock arm, engaging devices on the standard and rock arm, and a spring tending to hold said devices in engagement and to move the rock arm after said devices havebeen disengaged.

2. In a device of the character described, an insulating base, a pair of stationary contacts mounted thereon, a standard, a rock arm pivoted on the standard, a switch plate.

carried by, but insulated from, the rock arm and adapted in one position to close the circuit between the stationary contacts, push buttons connected with said rock arm, 00- operating projections on said standard and rock arm, and a spring connecting said rock arm and standard on opposite sides of tht pivotal connection between them.

3. In a device of the character described, a base of insulating material, a pair of stationary contacts mounted thereon, a standard mounted on the base, a rock arm pivotally mounted on the standard, a switch plate mounted on but insulated from the rock arm and adapted in one position to close the circuit between said stationary contacts, interengaging projections on the standard and rock arm, fingers projecting from corre sponding sides of said standard and rock arm but at opposite sides of the pivotal connection between the said'parts, and a spring having its ends attached to said fingers.

4. In a device of the character described, a base of insulating material, a pair of stationary contacts mounted thereon, a standard mounted thereon, a rock arm pivoted to the standard, a switch plate carried by but insulated from the rock arm and adapted in one position to close the circuit between said stationary contacts, push buttons connected with said rock arm, interengaging parts on rock arm after said parts have become dis- 20 engaged from one another.

MONROE GUETT.

\Vitnesses:

ARTHUR S. ALLEN, EDWIN E. SAGE. 

